Frost mask



March 21, 1944. P. MAGGI FROST MASK- Filed Nov. 19, 1945 s She ets -Sheet 1 @1301 pwiw;

Arim/sr March 21,1944. R MAGG, 2,344,920

FROST MASK Filed Nov. -19, 1945 s Shpts-Sh'e'et 2 INVENTOR.

fa ls: 2 M ga MarchZI 1944. P. M G 2,344,920

FROST MASK Filed Nov. l9,- 1943 S-Sheets-Sheet 3 j J 2 I NVENTOR.

Tit- -113- AT TORNEY PatentedMar. 21, "1944 UNITED s'rAri-zs PATENT orricr.

2,344,920 ,rnos'r misx' Gilbert r. Maggi, Brooklyn, N. Y. Application November 19, 1943, Serial No. 510,929

' 13 Claims- (01. 128-141) This invention relates tonew and useful improvements in a frost mask.

More specifically, the invention proposes the construction of a frost mask having a heat insulating and weatherproofbod formed ofmaterial which will permit a subnormal escape of heat vapors and which forms a primary chamber arranged in a manner to enclose the exposed portions of ones face from the hair line to a point beneath the chin and back to the ears or it may be made to fully enclose the head.

A further object of the invention proposes providing the interior of the heat insulating and weatherproof body with a heat insulating member for engaging over the front of one's nose and mouth in a manner to form a secondarychambe! within the'primary chamber for enclosing the nose and mouth.

Still another object of the invention proposes air supply tube or tubes from the exterior which pass through the primary chamber in a, manner to preheat the air before being supplied to the secondary chamber to supply the secondary chamber with air heated to a degree to be comfortably inhaled.

Still another object of the invention proposes providing the air supply tubes with valves for permitting the entrance of air through these tubes only and the provision of a valve controlled exhaust tube leading from the secondary chamber through the primary chamber to the exterior of the mask to discharge the exhaled air under the clothing of the wearer or into the hood at the back of the head, or to any part of the body where the Vapors will not come in confact with the cold air: V r I A further object of the invention proposes the provision of a tube for speaking which is nor-. mally closed and mounted through the body and member and which is arranged to be opened to permit the passage of sound waves, and when opened; closes the air supply tubes and air exhaust tubes to permit air to be takenthrough the open speaking tubes.

A further object of the invention is the'provision of openings in the body arranged concentric withv the eyes with the provision of a transparent frost proof means for closing the eye openings to clearly an prevent the transparent means from being clouded by the condensation of vapor thereof. v

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure- Fig. 1 is a front elevational view of a frost mask constructed in accordance with this invention.

' Fig. 2 is a side elevational view of Fig. 1.

Fig. 3 is an inside view of Fig. 1.

Fig. 4 is an enlarged detailed partial vertical sectional view taken on the line H of Fig. 1.

Fig. 5 is an enlarged detailed view of a portion of Fig. 1.

Fig. 6 is a partial vertical sectional view taken on the line 6-8 of Fig. 4. v

Fig. 7 is an enlarged detailed sectional view taken on the line 1-1 of Fig. 1.

' Fig. 8 is a view similar to a portion of Fig. 4, but illustrating a modification of the invention.

Fig. 9 is a front elevational view similar to Fig. 1, but illustrating a. still further modification of the invention.

Fig. 10 is an enlarged partial vertical sectional view taken on the line Ill-l 0 of Fig. 9.

Fig. 11 is a. partial side elevational view of Fig. 9.

The frost mask, according to this invention, includes a heat insulating and weatherproof body ID. This heat insulating body 10 is preferably constructed of a material which will permit a subnormal escape of heat vapors from the interior thereof. The heat'insulating body II! is designed permit the wearer of the mask to see the body to form a primary chamber II for enclosing the front of ones face from the hair line to a point below the chin and as far back as the ears or fully around the head. The heat insulating body' I II is provided with'suitable straps I! for engaging about the back of the wearer's head to retain ill in position upon the front thereof.

A heat insulating member I3 is mounted within the body In and forms a secondary chamber H for enclosing and engaging over the front of the wearers mouth and nose, as indicated by the I dot and dash lines IS in Fig. 4.

Air supply tube or tubes it connect with the exterior of the heat insulating body ID at points H at a distance remote from the heat insulating member M. The tube Or tubes I6 extend through the primary chamber H of the body Ill and connect with passages IS in the top of the ,heat

I insulating member l3 and which terminate in a small tube IS.

A flat valve 20 is plvotally supported within the member l3 and is arranged to close the end of th tube l9 when air attempts to discharge therethrough and which pivots away from the end thereoi to permit air to enter the secondary, chamber l4. Intermediate portions of the tube ii are provided with small containers I! which are adapted to be filled with feathers, charcoal or any other similar material or substance to absorb moisture, gases and other obstacles which attempt to enter the tubes It with the air that is to be inhaled.

The bottom of the member I3 is formed with a discharge passage 22 which connects with discharge exhale air tubes 23 which extend through the primary chamber II and which have their free ends 24 extended from the back of the body It. A one way valve 25 is mounted in the discharge passage 22 to permit air .to discharge through this passage while at the same time preventing the entrance of air. The discharge valve 25 comprises a casing 23 enclosing a spring pressed ball 21 which normally closes a discharge opening 28 in the casing 23. When the person wearing the mask exhales the ball 21 will be blown off the discharge opening "permitting the exit of air therefrom. a

A speaking tube 30 of any shape I mounted through the body l and a member l3. The speaking tube 30 is anchored in position by means of projections 3i from the member l3 which engage corresponding openings in the tube 30. The tube 30 is provided at its exposed front end with a plurality of openings 32 through which sound waves are adapted to pass. A cup shaped cover 33 engages over the speaking tube 30 and has its walls disposed between the adjacent faces of the tube 30 and the member l3. The front of the cover 33 is provided with a plurality of openings 33* dis-aligned with the openings 32 in the tube 30' to close the front oi this tube. A spring 34 acts between a pin 35 mounted on the cover 33 for normally urging the tube and cover into a position in which the openings 32 and 33 are dis-aligned. The pin 36 which is attached to the cover 33 passes through an enlarged slot 31 which permits relative movement between the cover 33 and the tube 35 in a manner to align and disalign the openings 32 and 33.

A pin 38 extends through an L-shaped slot 33 in the cover 33 and threadedly engages a complementary opening in the speaking tube 30. The screw 38 engaging the slot permits the cover 33 to be rotated relative to the tube 30 to align the openings 32 and 33*. The spring 34 tends to turn the cover relative to the tube 33 to disalign the tubes 32 and 33!.

In the aligned position of the openings 32 and 33 the cover 33 may be projected slightly outward, as indicated by the dot and dash lines 33' in Fig. 4, to engage the screw 33 into the laterally extending portion of the L-shaped slot 33 to hold the cover 33 and tube 30 in a position in which the openings 32 and 33 are aligned in spite of the action of the spring 34 which tends to disalign these openings. I

The speaking tube 30 and cover 33 are formed with aligned openings 4| arranged in alignment with the air intake passage" and the air exhaustpassage 22. In the normal position of the cover 33, indicated by the full lines in Fig. 4, the passages 4| are aligned with each other, permitting a free intake of air and a free discharge of air. However, when the cover 33 is pulled'outwards and twisted to align the openings 32! and:

33 the openings 4| will become disaligned and I exhaust passage 22 will be closed. In this position the air to be inhaled and the exhaled air will pass through the aligned openings 32 and 33'.

The body I0 is provided with openings 50 in a position to be aligned with ones eyes when the mask is worn, with each of the openings being provided with a transparent frost proof means 5| closing the eye openings.

The means 5| comprises a plastic or other suitable material frame 52 mounted in the opening 50 and which supports a pair of transparent glasses 53. The glasses 53 are supported in the frame 52 at positions spaced from each other providing a chamber 54 between the adjacent faces of the glass 53. A discharge tube 55 extends from the interior of the chamber 54 along the outside of the body l0 and each is provided with a valve closure 55. The valve closure 56 is arranged in a manner to permit an exhaust pump to be connected therewith for discharging the air from the chamber 54 providing a vacuum space. The vacuum space 54 tends to insulate the inside and outside glasses 53 preventingw moisture from condensing thereon and impair vision. This space 54 may contain a suitable gas absorption agent (not shown) such as charcoal, silicate gel, or the like. Glasses to be worn independently of the mask may also be constructed in this manner.

When worn the mask will act to retain all or part of the body heat within the primary chamber ii to prevent the front of the face from being frost bitten. The application of the intake tubes l6 and discharge tubes 23 will permit air to be supplied to the secondary chamber I 4, and the provision of having the intake tubes i8 pass through the primary tubes chamber will act to preheat the air supplied to the secondary chamber i4 at a temperature to be comfortably inhaled. At the same time the speaking tube 33 permits a free conversation to be held when this is necessary, and the arrangement with the tube. The application of the vacuum space between the glasses which cover the eye openings of the body i0 tend to insulate these glasses and prevent vapors within the body it) from condensing upon the glasses and impairing vision, due to the gas absorption agent.

In the modification of the invention shown in Fig. 8 the discharge valve 25' is in the nature of a flap valve which swings to the open position illustrated by the dot and dash lines when air exhausts through the discharge passage 22. The flap valve 25' assumes a normal closed position by the full lines when air is inhaled.

In other respects this form of the invention is similar to that previously shown and like reference numeraisidentify like parts in each of the several views.

In Figs. 9 to 11 a modification of the invention is disclosed in which the speaking tube 33' is rectangular in shape and formed with the openings 33". A plate 30 is vertically slidably mounted beh nd the vertical wall of the speaking tube 33" and carries the openings ed to be aligned with the openings 33*. Lugs 60 extend from the plate 53 along the side walls of I the passage through the air inlet' i3 and the air the speaking tube 33", and pins 52 extend from the lugs 6i through vertical slots 53 in the side walls of the speaking tube 33" to the outside to 32.wh ich are adaptchamber within said primary be gripped for moving the plate-to align and disalign the openings ll and I2. "The air inlet tube II and the air discharge tube 23 have their inner. ends disposed adjacent the plate 80, and the'plate I is formed with valve closure members it engageable with the ends of the tubes is and II for closing them. As shown on the drawings, when the openings 32 and 83 are disaiigned, the closure members 84 are disengaged from the ends of the tubes II and 23 leaving them free to pass air. However, when the plate is moved to align the openings I2 and 13', the closure members, will engage the ends of the tubes l8 and 23 closing them, so that air ,will be supplied through the aligned openings 32 In other respects this form of the invention is Having thus'descrlbed my invention, what 1 claim as new and desire to secure by United States Letters Patent is:

1. A frost mask, comprising a heat masts body for engaging over and to the front of ones face forming a primary chamber about one's face, a heat insulating member for engaging over and to the front of one's nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes" from said secondary chamber passing thro gh said primary chamber and then to the exte or, a tube for speaking mounted through said member and body, and a cover. for shutting said speaker tube and controlling said air tubes for closing said air tubes when the speaker tube is open. s r

' 2. Afrost mask, comprising a heat insulating body, for engaging over and to the front of ones face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of ones nose and mouth and mounted within said body forming a secondary chamberwithin said primary chamber, air supply tubes from the exterior passingthrough said pr mary'chainber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the exterior, a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air-tubes for closing said air tubes when the speaker tube is open, said heat insulating-body being formed of material which will permit a subnormal escape of heat vapors from the interior thereof.

3. A frost mask, comprising a heat;insulating body for engaging over and to the front of ones face forming a primary chamber about one's face, a heat insulating member for engaging over and to the front of ones nose. andmouthand with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the exterior, a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said .air tubes when the speaker tube is open, and a\valve .on' said air supply tube for permitting the entrance of air tothe secondary chamber while preventing the discharge of air through this tube.

4. A frost mask, comprising a heat insulating body for engaging over and to the front of one's face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of one's nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said prfmary chamber for preheatingand connecting with said secondary chamber, air exhaust tube from said secondary chamber passing through said primary chamber and then to the exterior, a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for 5. A front mask, comprising a'heat insulating,

body for engaging over and to the front of one's face forming a primary chamber about one's face, a heat insulating member for engaging over and to the front of ones nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the'exterior, a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said air tubes when the speaker tube is Y. open,- said tube and cover being provided with and to the front of one's nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubesfrom the exterior passing/through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said prmary chamber and then to the exterior,

'a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said'air tubes when the speaker tube is open. said tube and cover being provided with openings adapted to be aligned in a turned p0sition of said cover relative to said tube, and

' resilient means for urging said cover into a mounted within said body forming a secondary chamber, air supply tubes from the exterior passing :through said primary chamber for preheating and connecting position relative to said tube in which said open ings will be disaligned.

7. A frost mask, comprising a heat insulating :body for engaging over and to the frontv of one's -i'ace forming a primary chamber about one's face, a heat-insulating member for engaging over exterior, a tube for speaking mounted through;

said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said air tubes when thespeaker tube is open, said tube and cover being provided with openings adapted to be aligned in a turned position of said cover relative to said tube, and resilient means for urging said cover into a position relative tosaid tube in which said openings,

will be disaligned, and means for holding said cover in a turned position relative to said tube against the action of said resilient means 'in which said openings will be aligned.

8. A frost mask, comprising a .heat insulating body for engaging over and to the front of ones face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of ones nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the exterior, a'tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said air tubes when the speaker tube is open, and containers of feathers, charcoal or other similar materials, or substances mounted in said air supply tubes for absorbing moisture and gases from the air being supplied by said tubes to said secondary chamber.

9. A frost mask, comprising a heat insulating body for engaging over and to the front of ones face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of ones noseand mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the exterior. a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said air tubes when the speaker tube is open, and a valve mounted in said exhaust tube for permitting the exhaust of air only, said valve comprising a casing enclosing a spring pressed ball,

11. A frost mask, comprising a heat insulating body for engaging'over and to the front of ones face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of ones nose and mouth and said primary chamber and then to the exterior, a.

tube for speaking mounted through said member and body. and a cover for shutting said speaker tube and controlling said air tubes for closing said air tubes when the speaker tube is open, said body having openings for the eyes,,- and transparent frost proof means closing said eye openings.

.10. A frost mask, comprising a heat insulating body for engaging over and to the front of ones face forming aprimary chamber about ones face, a heat insulating member for engaging over and to the front of ones nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with saidJsecondary chamber, air exhaust tube from said secondary chamber passing through mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tube from said secondary chamber passing through said primary chamber and then to the exterior. a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air tubes for closing said air tubes when the speaker tube is open, and a valve mounted in said exhaust tube for permitting the exhaust of air only, said valve comprising a flap valve.

12. A frost mask, comprising a heat insulating body for engaging over and to the front of ones face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of ones nose and mouth and mounted within said body forming a secondary chamber within said primary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the exterior, a tube for speaking mounted through said member and body, and a cover for shutting said speaker tube and controlling said air. tubes for closing said air tubes when the speaker tube is open, said cover, comprising a slidably mounted plate having openings alignable with openings in said tube.

13. A frost mask, comprising a heat insulating body for engaging over and to the front of ones face forming a primary chamber about ones face, a heat insulating member for engaging over and to the front of ones nose and mouth and mounted within said body forming a secondary chamber within saidprimary chamber, air supply tubes from the exterior passing through said primary chamber for preheating and connecting with said secondary chamber, air exhaust tubes from said secondary chamber passing through said primary chamber and then to the exterior. a tube for speaking mounted through said member and body, and a cover for shutting said GILBERT P. MAGGI. 

